JP2003027006A - Paint composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coating material composition which can increase water around tourmaline and generate stably a negative ion by containing a moisture- absorption material which easily adsorbs water and easily retains water in the composition. SOLUTION: This coating material composition comprises a coating material comprising tourmaline particles and a synthetic resin as principal components, and besides contains the moisture-absorption material of at least one of a water susceptibility polymer and an inorganic porous filler, a particle diameter of the tourmaline particle being preferably 0.3-50.0 μm, and the moisture-absorption material being preferably diatomaceous earth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition which is applied to the wall surface of a building and is particularly suitable for finishing the inner wall surface and ceiling of the building.

[0002]

2. Description of the Related Art Conventionally, paints such as tourmaline have been blended,
There are many things that produce negative ions and get the effect. For example, JP-A-10-46060 and JP-A-11-279445 can be cited.
The invention described in Japanese Patent Application Laid-Open No. 10-46060 provides a paint in which dirt is unlikely to adhere and the adhered dirt naturally flows off.

The invention described in Japanese Patent Application Laid-Open No. 11-279445 can be converted into a negative ion generator by simply coating the surface of a familiar object, and the negative ion generator can be easily created by familiar means. Furthermore, by applying surface coating, all substances can be converted into negative ion generating materials. In these inventions, rainwater or water in the air is electrolyzed into H ⁺ and OH ⁻ by a weak current generated by tourmaline, and the effect of the invention is exhibited by the OH ⁻ .

[0004]

However, when it is desired to generate a negative ion by tourmaline, it is necessary to have water around the tourmaline, and the stable existence of the water results in efficiency. Can negatively generate negative ions.

The present invention has been made by paying attention to the problems existing in the prior art as described above. The purpose is to increase the amount of water around tourmaline and stably generate negative ions by containing a moisture absorbent that easily adsorbs and retains water in the coating composition. To provide things.

[0006]

In order to achieve the above-mentioned object, the coating composition of the invention according to claim 1 is a coating composition containing tourmaline particles and a synthetic resin as main components. Either polymer or inorganic porous filler
It contains one or more kinds of hygroscopic materials.

In the coating composition of the invention described in claim 2, in the invention described in claim 1, the particle size of the tourmaline particles is in the range of 0.3 μm to 50.0 μm.

A third aspect of the present invention is the coating composition of the first or second aspect, wherein the hygroscopic material is diatomaceous earth.

The coating composition of the invention described in claim 4 is the composition according to any one of claims 1 to 3, wherein 0.5 parts of tourmaline particles are used when the total amount of the coating composition is 100 parts by weight. ~ 20.0 parts by weight, diatomaceous earth 5.0 ~
50.0 parts by weight and synthetic resin in the range of 5.0 to 40.0 parts by weight.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below. The coating composition of the present invention is a coating containing tourmaline particles and a synthetic resin as main components, and further comprises any one of a water-absorbing polymer and an inorganic porous filler.
It contains one or more kinds of hygroscopic materials.

First, the tourmaline particles are the components of the coating composition.
It is one of the main components. This tourmaline particle has a paint composition
Generate negative ions from the coating film formed by objects
It is for the purpose. Tourmaline used in this invention
May be a commonly known one. Contained in coating
The tourmaline particles that are generated are not subject to pressure, temperature changes, electromagnetic waves, or light.
Which energy acts on the tourmaline particles as external pressure
If a small amount of electric current continues to flow, the water in the air
It is electrolyzed by electric current and H⁺And OH⁻Becomes That O
H⁻By binding to water molecules around the coating film,
Hydroxyl ion (H _ThreeO_Two ⁻) Negative ion
Occur.

The H ⁺ generated by the electrolysis is supplied with electrons from the tourmaline particles and is released to the atmosphere as hydrogen gas. Further, by adding a rare earth element as a stimulant, the generation of negative ions can be made more efficient. Furthermore, the tourmaline particles are 4 μm to 14 μm.
It generates m far infrared rays.

[0013] Tourmaline has various compositions, but basically it is a silicate mineral containing boron and belongs to the three-sided or six-sided heteropolar image group, and this heteropolar image is vertically asymmetrical. is there. The particle size of the tourmaline particles is 0.3 μm
Those having a range of 50.0 μm are preferable.
More preferably, it is in the range of 0.3 μm to 5.0 μm.

If the particles are smaller than 0.3 μm, it may be difficult to produce a coating composition. Also, 50.
If it is larger than 0 μm, the surface area becomes smaller,
Occurrence of negative ions may be less efficient. Further, since tourmaline particles are exposed to the coating film formed from the coating composition, the surface of the coating film may not be finished smoothly, which is not preferable.

When the thickness is in the range of 0.3 μm to 5.0 μm, it is possible to obtain a coating composition which has a high efficiency of generating negative ions and is easy to manufacture. The synthetic resin is a resin that binds components constituting a coating composition such as tourmaline particles and a moisture absorbent to an object to be coated such as a wall surface.

The synthetic resin may be a resin such as an acrylic resin, a urethane resin, an epoxy resin, a melamine resin, an alkyd resin, a vinyl chloride resin, a silicone resin, a vinyl acetate resin or a polyester resin, which may be used alone or as a copolymer. What was dissolved in the organic solvent or what was dispersed in water as an emulsion is used.
Synthetic resin emulsions are preferably used because of their ease of use, ease of manufacture and availability of coating compositions.

The tourmaline particles and the paint containing a synthetic resin as a main component form a coating film which releases negative ions by tourmaline. This paint often contains a white pigment such as a coloring pigment or titanium oxide in addition to the above two components, and may contain other components.

The coating composition containing a coloring pigment and a white pigment can color the coating film formed by the coating material in any color tone, and can make the object to be makeup-finished in any color tone. Other components include calcium carbonate, aluminum hydroxide, alumina, silica, inorganic fibers, fillers such as rock wool, halogen-based, phosphorus-based, flame retardants such as antimony trioxide compounds, defoaming agents, dispersants, For example, surfactants used as wetting agents, film-forming aids, high-boiling solvents used as antifreeze agents, thickeners for adjusting viscosity and viscosity, antiseptics, antialgal agents, antifungal agents, etc. Ingredients generally used are used.

Next, the moisture absorbent is contained in the coating composition, and when the coating composition forms a coating film, it absorbs moisture such as water vapor from the atmosphere around the coating film, and further, It has a humidity control property that releases moisture that has been absorbed. By the action of the absorbent as described above, it is possible to stably increase the amount of water around the coating film formed from this coating composition, and to stably supply the water around the tourmaline in the coating film. Therefore, negative ions can be efficiently generated.

The particle size of the hygroscopic material is preferably 0.5 to 50.0 μm. If it is smaller than 0.5 μm,
It is difficult to produce a coating composition, and if it is larger than 50.0 μm, the surface area is small, so that the efficiency of moisture control such as water absorption performance becomes poor, and the film formed from the coating composition has a moisture absorbent. Since the particles are exposed, the surface of the coating film may not be finished smoothly, which is not preferable.

As such a moisture absorbent, a water absorbent polymer,
An inorganic porous filler can be mentioned. The water-absorbent polymer is a polymer having a property of absorbing water in a short time, and it may be made porous, or graft-polymerized or mixed with a hydrophilic polymer. It is appropriately selected depending on the water resistance, and the kind thereof is not particularly limited.

Specific examples include isobutylene-maleic acid type polymers, modified starch, cellulose, acrylonitrile-grafted starch hydrolyzate, and polyacrylonitrile derivatives. The content of the water-absorbent polymer is 0.1 to 10% with respect to the solid content of the coating composition.
0% by weight is the preferred range, 0.1-5.0% by weight
Is a more preferable range. When the amount is less than 0.1% by weight, the moisture control properties such as water absorption performance are not sufficient. Also,
If it is more than 10.0% by weight, the moisture absorption is too high,
The coating film may crack.

As the inorganic porous filler, diatomaceous earth, zeolite, silica gel, alumina, lime, allophane, kaolin, halloysite, pumice, clay, shirasu, celite, talc, gypsum, vermiculite, bentonite,
Examples of the porous material include asbestos, pozzolan, cement, sepiolite, alumina silicate, silica aluminate, calcium silicate, magnesia silicate, silica magnesianate and activated carbon.

Since these are porous, they can absorb water vapor such as water in the atmosphere. Diatomaceous earth is preferably used because of its moisture control properties such as water absorption performance, suitability for coating, water resistance of coating film, and availability. Diatomaceous earth is composed of fossils of unicellular algae called diatom, and its main component is silicon dioxide. Its particle size is a few μ
It is as small as m, and the range of 0.5 to 10.0 μm is preferable. When it is smaller than 0.5 μm, it becomes difficult to produce a coating composition, and when it is larger than 10 μm, the surface area becomes small, so that the humidity control efficiency such as water absorption performance becomes poor.

The coating composition of the present invention contains 0.5% tourmaline particles when the total amount of the coating composition is 100 parts by weight.
˜20.0 parts by weight, diatomaceous earth 5.0 to 50.0 parts by weight, and synthetic resin preferably 5.0 to 40.0 parts by weight. When the content is within the above range, it is possible to obtain a coating composition that forms a coating film in which negative ions are efficiently generated.

The coating composition preferably has a pigment volume concentration of 55 to 75%. If it is less than 55%, the amount of the binder such as the synthetic resin emulsion in the coating composition increases, and the moisture content of the water absorption performance may be reduced by the binder. When it is more than 75%, the physical properties such as water resistance and weather resistance of the coating film may deteriorate.

The coating composition constructed as described above is applied to an object to be coated to form a coating film. The coating film has a function of absorbing moisture in the atmosphere by a moisture absorbent and gradually releasing the absorbed moisture to the atmosphere, so that the amount of moisture around the coating film can be increased. It is possible to efficiently generate negative ions from.

The thickness of this coating film is preferably in the range of 50 to 2000 μm. When it is thinner than this range, the amount of negative ions generated is small, and when it is thick, the amount of tourmaline contained in the coating film is large, and the negative ion generation efficiency is deteriorated. Further, as the method for forming the coating film, it can be applied by a usual application method such as a brush, a roller, a spray, a trowel, and a spatula, and the application method is appropriately selected as necessary and is particularly limited. Not a thing.

As described above, according to this embodiment, the following effects are exhibited. A coating composition containing tourmaline particles and a synthetic resin as main components, which further contains at least one moisture absorbent of a water-absorbent polymer and an inorganic porous filler, thereby providing a coating composition. By containing a hygroscopic material that easily adsorbs and retains water, the amount of water around the tourmaline particles can be increased, and negative ions can be stably generated.

The particle size of the tourmaline particles is 0.3
By being in the range of μm to 50.0 μm, the coating composition is easy to produce and the negative ion generation efficiency is good.・ Because the hygroscopic material is diatomaceous earth,
It excels in moisture control such as water absorption performance, suitability for coating, water resistance of coating film, and easy availability.

When the total amount of the coating composition is 100 parts by weight, 0.5 to 20.0 parts by weight of tourmaline particles, 5.0 to 50.0 parts by weight of diatomaceous earth, and 5.0 to 4 parts of synthetic resin.
By containing in the range of 0.0 parts by weight,
It is a coating composition that forms a coating film in which negative ions are efficiently generated.

Further, by adding a rare earth element as a stimulant, the generation of negative ions can be made more efficient. Since the particle diameter of the hygroscopic material is 0.5 to 50.0 μm, the coating composition can be easily manufactured and the moisture control performance such as water absorption performance is good.

The particle size of the diatomaceous earth is 0.5 to 10.0
When it is in the range of μm, it becomes difficult to produce the coating composition, and the moisture control performance and other humidity control properties are good. -When the pigment volume concentration of the coating composition is in the range of 55 to 75%, humidity control properties such as water absorption performance are not reduced, and physical properties such as water resistance and weather resistance of the coating film are not deteriorated. It is a thing. -The thickness of the coating film formed by the coating composition is 50 to 2
Within the range of 000 μm, the negative ion generation efficiency is good.

[0034]

EXAMPLES The above embodiment will be described in more detail based on examples. The synthetic resin used in Examples and Comparative Examples was an acrylic resin emulsion having a solid content of 50% by weight, and diatomaceous earth as an inorganic porous filler was used as a moisture absorbent. This diatomaceous earth has an average particle size of 5.0 μm.

Further, titanium oxide was blended. Also, as other components, calcium carbonate, a defoaming agent, a dispersant,
A surfactant used as a wetting agent, a film-forming aid, a high-boiling-point solvent used as an antifreezing agent, a viscosity, and a thickener for adjusting the viscosity were appropriately used. The tourmaline used in the examples has an average particle size of 3.0 μm.

The formulation of Example 1 is shown below. Acrylic synthetic resin emulsion (solid content) 10.0 wt% Tourmaline 7.5 wt% Diatomaceous earth 40.0 wt% Titanium oxide 10.0 wt% Other components 37.5 wt% Total 100.0 wt% The PVC of coating composition 1 is about 68%.

To the coating composition of Example 1, 10 ppm of uranium oxide which is an oxide of a rare earth element was added as a stimulant to 100 parts by weight of the coating composition, and the coating composition was prepared as Example 2. The PVC of the coating composition of this Example 2 is about 68%. Example 3 was a coating composition of Example 1 in which zeolite was used instead of diatomaceous earth. Example 3
The zeolite has the same average particle size as diatomaceous earth, which is 3.
The thickness is 0 μm. In addition, PVC of this coating composition
Is about 68%.

Next, the formulation of the comparative example is shown below. Acrylic synthetic resin emulsion (solid content) 10.0 wt% Tourmaline 7.5 wt% Calcium carbonate 40.0 wt% Titanium oxide 10.0 wt% Other components 37.5 wt% Total 100.0 wt% This comparison The coating composition of the example has calcium carbonate in place of the diatomaceous earth shown in the formulation of Example 1. The PVC of the comparative coating composition is about 68%.

A coating film of 900 μm was formed on each glass plate (30 cm × 3) with each coating composition of Examples 1 to 3 and Comparative Example.
0 cm). The amount of negative ions from the coating film was measured. The area of the coating film is 900 cm ² .
Furthermore, with the coating composition of Example 1, 50 μm, 100
The amount of negative ions generated from the coating film of μm, 2000 μm and 3000 μm was measured. These coatings were placed on a glass plate (30 cm x 30 cm) in the same manner as above.
It was performed with a size of 0 cm ² .

As the method for measuring the amount of negative ions, an ion measuring instrument IC-1000 (manufactured by Universal Planning Co., Ltd.) was used. Measurement conditions: room temperature 22 ° C, humidity 39% R
It was carried out in a constant temperature bath of H. The volume of the constant temperature bath is 9000c
It was m ³ . The test body was spray-coated with the coating composition and then allowed to stand in this thermostatic chamber for 1 week for measurement. This measurement is 5 at a distance of about 10 mm from the coating surface.
I went for a minute. Furthermore, the coating compositions used in Examples and Comparative Examples were applied to the inner walls of 6-tatami mats with a height of 2.4 m, respectively, and after curing for 2 weeks, three people were allowed to stay in the room for 15 minutes. , I was asked to judge each comfort.

The comfort is judged to be comfortable when all three are judged to be comfortable, and the comfort is judged to be two when all are judged to be comfortable.
A little comfortable. In other cases, it was judged to be the same as usual. The negative ion to be measured is 8 × 10
It is a small ion having a mobility of ⁻⁵ (m / s) or more.

Table 1 below shows the amount of negative ions generated from each coating and the judgment of comfort. The amount of generated negative ions is a value obtained by subtracting the amount of negative ions originally present in the air (600 / cc).

[Table 1]

The results obtained from the above examples are summarized below. When the thickness of the coating film formed from the coating composition of Example 1 is less than 50 μm, the amount of negative ions generated is small, and therefore the comfort is the same as usual. In addition, the film thickness is 3000 μm and 2000
When compared with μm, the rate of increase in the amount of negative ions generated is small and it may not be efficient.

The amount of negative ions generated in the coating composition of Example 2 was large and efficient as compared with that of Example 1. The amount of negative ions generated in the coating composition of Example 3 is almost the same as that of Example 1. Further, in the comparative example, although the generation of negative ions is generated, it is less than that of the example 1, and it can be said that it is not efficient.

Next, the technical idea which can be understood from the above-mentioned embodiment will be described below. -The coating composition according to any one of claims 1 to 4, further comprising a rare earth element. As a result, the generation of negative ions can be made more efficient.

The particle size of the tourmaline particles is 0.3
The coating composition according to any one of claims 1 to 4, wherein the coating composition is in the range of µm to 50.0 µm. As a result, the coating composition can be easily produced and the negative ion generation efficiency is good.

The pigment volume concentration of the coating composition is 55 to 7
The coating composition according to any one of claims 1 to 4, which is in a range of 5%. By this,
The humidity control properties such as water absorption performance are not reduced, and the physical properties such as water resistance and weather resistance of the coating film are not deteriorated.

A coating film formed from the coating composition according to any one of claims 1 to 4 has a thickness of 50 to 50.
Due to this, the coating film structure is characterized in that it is in the range of 2000 μm, and thus the negative ion generation efficiency is good.

[0049]

Since the present invention is constructed as described above, it has the following effects. According to the coating composition of the invention as set forth in claim 1, the moisture content around tourmaline is increased by containing a hygroscopic material that easily adsorbs and retains water in the coating composition, so that the water content is stable and negative. It is capable of generating ions.

According to the coating composition of the invention described in claim 2, in addition to the effect of the invention described in claim 1, the coating composition is easy to produce and the efficiency of generation of negative ions is good. .

According to the coating composition of the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2,
It excels in moisture control such as water absorption performance, suitability for coating, water resistance of coating film, and easy availability.

According to the coating composition of the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, a coating film in which negative ions are efficiently generated is formed. It is a coating composition.

Continued front page    F-term (reference) 4J038 BA022 BA112 CB122 CD021                       CF021 CG001 CG062 CG162                       CP012 DA161 DB001 DD001                       DD231 DG001 DL002 HA206                       HA216 HA436 HA446 HA456                       HA476 HA496 HA506 KA08                       KA11 KA12 KA20 MA14 NA04                       NA05 NA17 NA24 PA18 PB05                       PC02 PC03

Claims (4)

[Claims] 1. A coating composition comprising tourmaline particles and a synthetic resin as main components, which further contains at least one hygroscopic material selected from a water-absorbing polymer and an inorganic porous filler. object. 2. The particle size of the tourmaline particles is 0.3 μm.
The coating composition according to claim 1, which is in the range of m to 50.0 μm. 3. The coating composition according to claim 1, wherein the moisture absorbent is diatomaceous earth. 4. When the total amount of the coating composition is 100 parts by weight, 0.5 to 20.0 parts by weight of tourmaline particles, 5.0 to 50.0 parts by weight of diatomaceous earth, and 5.0 to 40 parts of a synthetic resin. ．
The coating composition according to any one of claims 1 to 3, wherein the coating composition is contained in an amount of 0 part by weight.